This post includes the complete answer key and detailed explanations for the Nuclear Physics exercise of 50 MCQs, designed in accordance with the PMDC syllabus for MDCAT and NUMS. All MCQs are created with reference to MDCAT and NUMS past papers, covering vital concepts such as radioactivity, half-life, nuclear reactions, binding energy, and mass defect. These explanations aim to deepen understanding and help students from UHS, DUHS, SZABMU, KMU, BOLAN, and JSMU confidently prepare for this critical Physics topic in their medical entry tests